Actually I do not know if is a but.
But once I try to change an Automation script.
Even the defaults one I get this error:
Errors:
Error CS0006 in line -11 column 0, Metadata file `EasyIoT.exe' could not be found
Error CS0006 in line -11 column 0, Metadata file `GenericDriver.dll' could not be found
Program disabled, fix errors first.